在idea中搭建微服务项目(22版),详细教程

        1.创建新的项目

         2.创建的项目类型为SpringBoot

 

 

         选择创建后再选择新建项目

 

       

        3. 将新建的项目中不需要的东西都给删了,只留下pom文件即可

         修改pom文件的版本

  <version>2.1.6.RELEASE</version>

         导入所需要的jar包,将原来<dependencies>中的依赖覆盖掉

  <!--        SpringBoot启动器-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <!--     SpringBoot测试启动器-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- Web依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- 日志依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-logging</artifactId>
        </dependency>
        <!-- Lombok工具 -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.4</version>
            <scope>provided</scope>
        </dependency>
        <!-- Actuator可以帮助你监控和管理Spring Boot应用 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <!-- 热部署 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency> 

        如果你的java版本比8高,还需要导入以下依赖

  <!-- 引入Jaxb开始 -->
        <dependency>
            <groupId>com.sun.xml.bind</groupId>
            <artifactId>jaxb-core</artifactId>
            <version>2.2.11</version>
        </dependency>
        <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
        </dependency>
        <dependency>
            <groupId>com.sun.xml.bind</groupId>
            <artifactId>jaxb-impl</artifactId>
            <version>2.2.11</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jaxb</groupId>
            <artifactId>jaxb-runtime</artifactId>
            <version>2.2.10-b140310.1920</version>
        </dependency>
        <dependency>
            <groupId>javax.activation</groupId>
            <artifactId>activation</artifactId>
            <version>1.1.1</version>
        </dependency>
        <!-- 引入Jaxb结束 -->

        导入微服务依赖的组件依赖

    <dependencyManagement>
        <dependencies>
            <!-- Spring Cloud Neflix 公司出品的微服务组件的依赖-->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Greenwich.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--Spring Cloud Alibaba微服务组件的依赖-->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2.1.0.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

        4.创建存在实体类的微服务

        在这个微服务下的pom文件中导入所需要的依赖

<dependencies>
        <!-- mybatis-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.3.2</version>
        </dependency>
        <!-- pojo持久化使用 -->
        <dependency>
            <groupId>javax.persistence</groupId>
            <artifactId>javax.persistence-api</artifactId>
            <version>2.2</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
    </dependencies>

        创建实体类

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.io.Serializable;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class User implements Serializable {
    private Integer id;
    private String username;
    private String password;
}

         5.创建用于编写逻辑的微服务,步骤和上面的一样,将名字编写为: leq-server-product

               引入实体类微服务的地址

    <dependencies>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>leq-server-common</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    </dependencies>

        导入第二代微服务组件nacos所需要的依赖

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

        创建启动类

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

@EnableDiscoveryClient
@SpringBootApplication
public class ProductApplication {
    public static void main(String[] args) {
        SpringApplication.run(ProductApplication.class,args);
    }
}

        编写配置文件,在resources创建application.properties文件

server.port=3000
spring.application.name=leq-server-product
spring.datasource.url=jdbc:mysql://localhost:3306/leq_pro?useSSL=false&useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=0216


spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848

        6.创建业务访问的微服务,名字为: leq-server-page

                也是先导入实体类的项目的地址

    <dependencies>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>leq-server-common</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    </dependencies>

             再导入以下依赖

        <!--nacos的客户端依赖-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <!-- 引入alibaba-nacos-config依赖，可以从Nacos配置中心获得配置信息 -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

        <!-- Sentinel核心环境依赖 -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
        </dependency>

        创建page的启动类

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;

@EnableFeignClients
@EnableDiscoveryClient
@SpringBootApplication
public class PageApplication {
    public static void main(String[] args) {
        SpringApplication.run(PageApplication.class,args);
    }
}

        编写配置文件,

        在resources创建application.properties文件

server.port=3100
spring.application.name=leq-server-page
spring.datasource.url=jdbc:mysql://localhost:3306/leq_pro?useSSL=false&useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=0216


spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848

        到这里我们的微服务项目就算是搭建完成了,接下来进行测试

       没有安装nacos的小伙伴可以看这个链接安装nacos : 快速安装nacos

         1.先启动naco服务注册中心

http://10.48.185.7:8848/nacos/index.html

         访问该地址在浏览器可以看到该页面就证明服务注册中心启动了

        启动page和product两个微服务项目,然后刷新该地址,就可以看到我们的项目注册到服务中心了

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